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:: year 4, Issue 1 (Journal of Acoustical Engineering Society of Iran 2016) ::
مجله علمی پژوهشی انجمن مهندسی صوتیات ایران 2016, 4(1): 61-69 Back to browse issues page
Optimization of sound transmission loss of a composite rectangular plate with infinite baffle
M. Bagheri *
Abstract:   (673 Views)

In this paper, by development of the Roussos’ method and using the generic algorithm, the optimization of sound transmission loss for a finite rectangular simply supported panel with infinite baffle was considered. Appropriate constraints were imposed to prevent softening effect occurrence due to optimization and the discrete frequencies were chosen based upon the sound transmission class with weighting constant for optimization. Several traditional composite materials were employed for the investigation. The results indicate that, in the mass control region, the optimization of stacking sequence and optimal thickness do not effectively contribute to improvement of the transmission loss due to the close densities of composite materials. In other words, composite plate optimization made of a stiffer materials, has better transmission loss characteristics. The results also show that, the lamina thickness optimization has an important effect to improve the transmission loss but the advantage of low weight composite material is compromised by optimization.
 

Keywords: Optimization, Transmission loss, Baffle, Composite panel.
Full-Text [PDF 126 kb]   (13 Downloads)    
Type of Study: Research |
Received: 2016/05/31 | Accepted: 2016/09/10 | Published: 2016/09/10
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Bagheri M. Optimization of sound transmission loss of a composite rectangular plate with infinite baffle. مجله علمی پژوهشی انجمن مهندسی صوتیات ایران. 2016; 4 (1) :61-69
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year 4, Issue 1 (Journal of Acoustical Engineering Society of Iran 2016) Back to browse issues page
مجله علمی-پژوهشی انجمن lمهندسی صوتیات ایران Journal of Acoustical Engineering Society of Iran
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